Defensive publication



DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 O.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter. h

PUBLISHED JULY 28, 1970 T876,009 PHOTOGRAPHIC ELEMENT AND PROCESS UTILIZING A DYE AND AN AROMATIC DIAZONIUM SALT Frederick J. Ranner, Kodak Park Works, Rochester, N.Y. 14650 Filed Jan. 28, 1970, Ser. No. 6,544 Int. Cl. G03c 1/52 US. Cl. 96-91 No Drawing. 12 Pages Specification a-Methylpyrylium salts, e.g., 2,4,6-trimethylpyry1ium perchlorate, can be employed as diazo couplers in lightsensitive diazosulfonate printout systems. 

